UA 3532 then AA 3415 at O'Hare
Knoxville → Chicago → Moline
Timetable, Chicago time
18:43UA 3532 from Knoxville at the gate
15:12AA 3415 to Moline leaves the gate
20 h 29 apart on the timetable, overnight
AA 3415 leaves 20 h 29 after UA 3532 arrives on the timetable: more than half a day, so not a connection we count.